@CHARSET "ISO-8859-1";

#div_tree
{
    margin: 20px 0 0 0;
  float: left;
  margin-right: 0px;
    width:400px;
   
}
#div_nhanvien
{
    margin-top:10px;
padding: 10px 0 0 0;
float:right;
width: 620px;
}

